Số hiệu tiêu chuẩn
prEN 61557-3
Tên tiêu chuẩn
IEC 61557-3, Ed. 2.0: Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance
Ngày phát hành
2005-07-00
Tiêu chuẩn tương đương
C42-198-3PR, IDT * IEC 85/271/CDV (2005-07), IDT * OEVE/OENORM EN 61557-3 (2005-10-01), IDT
Từ khóa
Definitions * Deviations * Direct current installations * Drift * Earth conductors * Electrical engineering * Electrical safety * Electromagnetic tests * Impedance measurement * Inscription * Installations for rated voltages * Loop resistance * Low voltage mains * Low-voltage installations * Measuring equipment * Operating instructions * Outer conductors * Resistance measurement * Specification (approval) * Testing * Zero conductors * Variations